Attribute C# Tutorial

using System;
class MainClass
{
  
  [Obsolete("Method2 has been replaced by NewMethod2", true)]
  public static int Method2()
  {
    return 2;
  }
  public static void Main() 
  {
    Console.WriteLine(Method2());
  }
}
ObsoleteattributethrowanerroriftheusertriestouseMethod2.cs(16,21): error CS0619:
'MainClass.Method2()' is obsolete: 'Method2 has been replaced by NewMethod2'